User's Manual

PROGRAMMING THE RADIO SST-442
14
Programmable Features
The following features may be programmed on a per
channel basis, or will affect all channels together.
Factory Per
Feature Range
Setting Channel
Automatic Inactivity Y - N Y -
Turn-off
Battery Saver Enable Y - N Y -
Battery Saver Off Time 0 – 8 1 -
(seconds)
Beep Volume Level F-C C -
(Fixed or Controlled)
Beep Fixed Level 0 – 100% 50% -
(percent of full volume)
Busy Channel TX Inhibit Y - N N
√
Carrier Only, No Codes - -
√
Channel Beep Rate S – F S -
(Slow or Fast)
Channel Selection Mode I – E I -
(Increment or Enter)
Digital Tone Invert RX Y - N N
√
Digital Tone Invert TX Y - N N
√
Digital Quiet Call (DCS) - -
√
Disable Monitor Y - N N
√
Number of Channels 0 – 10 4 -
Narrow Band Channel Y - N N
√
PTT Programming Y – N Y -
Enabled
Quiet Call (CTCSS) See Table 2 -
√
Receive Squelch Tone Y - N N
√
Squelch Tightener 0 - 7 0
√
TX Time-out Enabled Y – N Y -
TX Time-out Timer 0 – 255 60 -
(seconds)
Turn On To Medium Y - N Y -
Volume Level
Descriptions of Features
Automatic Inactivity Turn-off - The radio automatically
shuts itself off if four hours go by without the micro-
controller detecting input from the volume, PTT or
channel controls.
Battery Saver - Enabling this option allows the radio
to go into battery saver mode when the radio remains
idle. The power saver begins after eight seconds of
inactivity.
Battery Saver Off Time - This is the cycle time that
the radio is off in battery saver mode before it checks
for a received signal. A long Battery Saver Off Time
may cause the user to miss the beginning of the first
message when in battery saver mode.
Beep Volume Level - The radio can be programmed
for a fixed beep volume or for a beep volume that is
adjusted with the Volume controls. If fixed beep
volume is selected, the fixed level can be set between
0 – 100%.
Busy Channel Transmit Inhibit - This keeps the radio
from broadcasting if the channel is busy, and is often
used in conjunction with Disable Monitor. If you press
the PTT when the channel is busy with a signal not
intended for your radio (not carrying your tone code),
this feature sounds a "busy" tone in the speaker and
keeps the transmitter turned off.
Channel Beep Rate - The rate at which the channel
indicator beeps occur can be set to fast or slow.
Channel Selection Mode - This feature allows the
channel selector to increment or enter the channel.
The channel number is "beeped out" when the
channel button is first pressed. The channel is not
changed. In increment mode the radio is changed to
the next available channel if the channel button is
pressed again within three seconds. In enter mode
the user must press the channel button the number of
times equal to the channel they wish to select.
Digital Quiet Call RX Invert - The programmed code
is inverted for receive mode only.
Digital Quiet Call TX Invert - The code is inverted for
transmit mode.
Disable Monitor - This function may be programmed
to keep the radio user from listening to other
licensees on a shared channel. QC or DQC must be
used for this option to have any affect, and the
Encode Only feature disabled.
Maximum Number of Channels - The number of
channels available on the radio can be set from 1 to
10.
Narrow Band Channel - Any channel can be set to
operate in narrow band mode, reducing the transmit
deviation to 2.5 KHz.
PTT Programming Mode Enabled - This feature
allows channel programming from a table of pre-
determined frequencies using the radio PTT switch.